Name:Stiven iLarraza
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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
It's necessary, because the implode function will return a string so you're trying to return a string on a function that expects a int, it will throw an error without that cast.
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